become arches, but somebody else would say, it's okay. we are doing fine. we have around the mid 20s, we began to see fireman walking up the stairs, for the people walking down, the sight of the fireman was a very calming experience. when i got into the lobby, and i could see the full impact. >> now you hear silence. and it's a dead calm of dust and smoke and all of a sudden, you hear people slowly somebody starts screaming, someone starts yelling and you are hearingue are hearing help. you are hearing, please. you are hearing very -- one at a time you are hearing it. it just started and then all of a sudden, everybody started screaming and coming out, what happened?! what happened?! >> i jumped up, grabbed my flashlight from the credenza, put a whistle around my neck and ran out of my private office into the larger office and said, come on, everybody, let's go. there has been an explosion upstairs, we have to move. let's get out of here. >> the elevator came, we went downstairs. we were on the ground floor now, about to get through the turnstile. the security guard asked us, where are y